On Fri, Feb 4, 2011 at 11:38 AM, Greg Smith <greg@xxxxxxxxxxxxxxx> wrote: > You don't turn it on; it's a one time operation that does a cleanup. It is > by far the easiest way to clean up the mess you have right now. Moving > forward, if you have max_fsm_pages set to an appropriate number, you > shouldn't end up back in this position again. But VACUUM along won't get > you out of there, and VACUUM FULL is always a worse way to clean this up > than CLUSTER. note that for large, randomly ordered tables, cluster can be pretty slow, and you might want to do the old: begin; select * into temporaryholdingtable order by somefield; truncate oldtable; insert into oldtables select * from temporaryholdingtable; commit; for fastest performance. I've had Cluster take hours to do that the above does in 1/4th the time. -- Sent via pgsql-performance mailing list (pgsql-performance@xxxxxxxxxxxxxx) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance
